4) Which of the following represent a valid hypothesis ?
A) Sodium metal reacts violently with water.
B) Oxygen is a gas at room temperature.
C) Lead is soft and malleable.
D) Neon does not react with oxygen.
E) Metals tend to lose electrons.
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Ответ:
a
Explanation:
It can be tested and have a control, etc.
Ответ:
The staff delete everything even if it's someone asking for a conversation. It's actually annoying
Explanation: